// 云函数入口文件
const cloud = require('wx-server-sdk')

cloud.init()

// 云函数入口函数
exports.main = async (event, context) => {
  const wxContext = cloud.getWXContext()
  console.log("event", event);
  var db=cloud.database();
  try{
    return await db.collection('wallpaper').where({

    }).get();
  }
    catch(err){
       console.log("失败",err);
    }
}